Maximal Volume of a Cone
If you cut a sector out of a circle and fold the radii together, you can form a cone. What central angle of the sector will produce a cone with maximum possible volume?
Use this Geometer's Sketchpad template to help your investigation.

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Volume of a Cone
This lesson has you collect data on the sizes of different cones and then form an algebraic model relating the central angle of a sector to the volume of a cone.
Submit your idea for an investigation to InterMath.
